Hex #00505d or rgb(0,80,93) in RGB space is the tint of bluish cian. It has hue angle of 188.39 degrees, value = 36 and saturation = 100. #00505d can be obtained by mixing 4 colors: 5 drops of blue, 1 drop of cyan, 2 drops of green, 4 drops of black.
Nearest safe hex - #006666. Below you can see the block with #00505d color and its structure: in procentage ratio and in drops of pigments. Click "TRY" button to move #00505d to the mixer and play with it.